import Vue from 'vue'
import Router from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue' //组件的导入
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import List from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/Order.vue'
import Report from '../components/report/Report.vue'



Vue.use(Router)

const router = new Router({
  routes: [
    { path: '/', redirect: '/login'},//路由重定向
    { path: '/login', component: Login },
    { 
      path: '/home', 
      component: Home,
      redirect:'/welcome',
      children:[
        {path:'/welcome', component: Welcome },
        {path:'/users',component:Users},
        {path:'/rights',component:Rights},
        {path:'/roles',component:Roles},
        {path:'/categories',component:Cate},
        {path:'/params',component:Params},
        {path:'/goods',component:List},
        {path:'/goods/add',component:Add},
        {path:'/orders',component:Order},
        {path:'/reports',component:Report},
        

    ] 
    }//组件的挂载
  ]
})

//挂载路由导航守卫
router.beforeEach((to,from,next)=>{
  // to 将要访问的路径
  // from 代表从那个路径跳转而来
  // next 是一个函数，表示放行
  //      next()放行  next('/login')强制跳转
  if(to.path === '/login'){
    return next();
  };
  //获取存储起来的 token
  const tokenStr = window.sessionStorage.getItem('token');
  if(!tokenStr) {
    return next('/login');
  }else{
    next();
  };
})

export default router
